Please note this is an old forum thread. Information in this post may be out-to-date and/or erroneous.
Every phpdocx version includes new features and improvements. Previously unsupported features may have been added to newer releases, or past issues may have been corrected.
We have run the previous script and then opened the DOCX output with MS Word 2007, MS Word 2010, MS Word 2013, MS Word 2016 and LibreOffice 6 and there's no border displayed.
What program and version are you using to open the DOCX?